Power supplies, voltage stabilisers and transformers.
This group supplies and stabilises power for the system: low-voltage control power supplies for control circuits inside panels (usually 24 V DC), voltage stabilisers for areas with fluctuating mains supply, isolating and step-down transformers, and standby batteries for control and fire alarm systems.
A control power supply is selected by the total current drawn by all 24 V devices in the panel, plus a margin — if the power is insufficient, the supply voltage dips when several relays pull in at the same time, causing intermittent faults that are very hard to trace.
- IEC 60076 for power transformers
- Total the 24 V current in the panel, plus a margin
- 118items
- 7brands
- 4groups
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One Source for the Whole Project.
16,297 items · 72 brands · 17 product groups
Wires and cables7,406Switchgear and protective devices1,892Control and automation equipment1,633Socket-outlets, plugs and switches1,440Lighting1,324Electrical enclosures and accessories567Medium-voltage equipment483Measuring and display instruments355Cable accessories and connectors323Conduits and installation accessories296Signalling and warning devices225Power supplies, voltage stabilisers and transformers118Cable ladders, trays and accessories94Fans and ventilation84Installation tools and materials29Pumps15Residential electrical products13